The film looks at how engineer Brad Plunkett discovered and developed the legendary wah sound, and how artists have used it to express themselves throughout its evolution.

Guitar icons such as Buddy Guy, Eddie Van Halen, Kirk Hammett, Slash, Steve Lukather and Zakk Wylde talk about how the wah has become a part of their signature sounds—while rock journalists such as Rolling Stone’s Ben Fong-Torres and Guitar Player’s Art Thompson explore the pedal’s cultural significance.

Learn how a simple effect became one of the most important tools of expression for guitarists everywhere.

Produced by Guard House Pictures, “Cry Baby: The Pedal That Rocks The World” is set for release in February 2011.Jimi Hendrix – Voodoo Chile (Slight Return)BBC - Lulu Show - January 4, 1969